Frequent Cleaning Of DustPulse Dust CollectorThe Damage To Filter Bags Is Multidimensional, Mainly Affecting Their Lifespan And Performance Through Mechanisms Such As Mechanical Stress, Material Fatigue, And Dust Layer Damage. The Following Is A Specific Analysis:
1、 Mechanical Wear Accelerates The Structural Damage Of Filter Bags
High Frequency Friction Between Filter Bag And Skeleton
Impact Wear At The Bottom Of The Filter Bag
2、 Material Fatigue Causes Aging And Cracking Of Filter Bags
Fiber Elastic Attenuation And Structural Relaxation
Accelerated Aging Under High Temperature Conditions
3、 Dust Layer Damage Leads To Degradation Of Filter Bag Performance
Premature Removal Of 'primary Layer' Affects Filtration Efficiency
The Dust Penetration Rate Increases And The Outlet Emission Concentration Exceeds The Standard;
The Filter Bag Comes Into Direct Contact With High Concentration Dust, Which Accelerates The Wear Rate.
The Dust Layer ("initial Layer") Naturally Formed On The Surface Of The Filter Bag Is The Key To Filtration, With A Porosity Smaller Than That Of The Filter Bag Itself, And Can Capture Fine Dust (<1 μ M). Short Cycle Dust Cleaning Can Damage The Initial Layer, Leading To: Dust Infiltration Causing Blockage Of Filter Bag Pores. When Cleaning Frequently, The Pulse Airflow May Blow The Coarse Dust In The Ash Hopper Back To The Surface Of The Filter Bag, Causing Large Particles Of Dust To Embed Into The Fiber Gaps Of The Filter Bag, Forming A "secondary Blockage". Even After Dust Cleaning, The Resistance Of The Filter Bag Is Difficult To Reduce, Ultimately Leading To "bag Sticking" Of The Filter Bag.
4、 Additional Damage In Special Dust Environments
Wet Dust Causes Adhesion Of Filter Bags
Corrosive Dust Exacerbates Material Corrosion
5、 Increased Cost And Maintenance Burden Of Filter Bag Replacement
How To Reduce The Damage To Filter Bags Caused By Frequent Dust Cleaning?
Using "fixed Resistance Cleaning" (triggered When The Resistance Reaches 1200-1500Pa) Instead Of "timed Cleaning" To Avoid Blindly Shortening The Cycle; Adjust The Pulse Width (such As Shortening From 0.1 Seconds To 0.08 Seconds) Or Reduce The Injection Pressure (while Ensuring The Cleaning Effect, Reduce The Pressure From 0.6 MPa To 0.5 MPa).
Select PTFE Or P84 Material Filter Bags For High Temperature Conditions, And Add Wear-resistant Coatings (such As Acrylic Film) On The Surface; The Skeleton Adopts Smooth Anti-corrosion Treatment (such As Silicification And Spraying) To Reduce Angular Friction.
Real Time Monitoring Of The Resistance Curve Of The Filter Bag Through Differential Pressure Sensors. If The Resistance Fluctuates Abnormally (such As A Sudden Drop In Resistance After Cleaning And A Rapid Rebound), Promptly Investigate Whether The Cleaning Cycle Is Too Short; Regularly Inspect Filter Bags (such As Randomly Selecting 5% Of Filter Bags Every Quarter To Check For Wear), And Establish A Replacement Ledger.
In Short, As The Core Component Of Pulse Dust Collectors, The Lifespan Of Filter Bags Is Closely Related To The Cleaning Cycle. Reasonably Controlling The Frequency Of Dust Removal Can Ensure Dust Removal Efficiency And Significantly Reduce Equipment Maintenance Costs.
